Roller-pin fastening for watches.



No. 639,698. Patented Dec. l9, I899.

E. J. HAVERLY. I ROLLER PIN FASTENING FOB WATCHES.

(Application filed Apr. 3, 1899.)

(No Model.)

WWW/l,

WITNESSES INVENTQR mmgmm ATTORNEY UNITED STATES PATENT Qrrrcn.

ELMER J HAVERLY, OF SAYRE, PENNSYLVANIA.

ROLLER-PIN FASTENING FOR WATCH-ES.

SPECIFICATION forming part of Letters Patent No. 639,698, dated December 19, 1899.

Application filed April 3, 1899. Berle-1N0. 711,465. (No model.)

To all whom, it may concern.-

Be it known that I, ELMER J. HAVERLY, a citizen of the United States, residing at Sayre, in the county of Bradford and State of Pennsylvania, have invented a new and Improved Roller-Pin Fastening for Watches, of which the following is a specification.

My invention relates to improvements in the manner of fastening certain jewels of a watch in their settings, and has to do more particularly with the fastening for the jewel rollerpin in the roller table. Heretofore these jewel-pinshave been fastened in their settings by cement. In time the cement works loose and the watch is thrown out of kilter.

The object of this invention is to do away with the cement and provide a permanent and secure fastening. I accomplish this obj ect by means of the device illustrated in theaccompanying drawings, in which-- Figure 1 represents the under face of a roller-table having my improved fastening device applied thereto; Fig. 2, a medial crosssection of the same, and Fig. '3 the top face of a roller-tablehaving a diiferent form of rollerpin from that shown in Fig. 1.

Similar letters refer to similar parts in the several views.

or represents the rol1er-table, perforated at the center at b to receive the spindle or stafi": of the balance-wheel;

c is the jewel roller-pin. (Shown cylindrical in Fig. 1 and of segmental cross-section in Fig. 3.) The pin may also be square in crosssection or of any desirable form. It is set in a correspondingly-shaped socketin the rollertable, which it fits closely. One face of the roller-table is provided with an annular groove or pocket (1, the outer periphery of which is preferably beveled, as shown in Fig. v2, and

cuts the socket for the roller-pin diametric-y ally, or nearly so; A divided ring 6, having its outer periphery beveled to correspond with groove 02 and cut to embrace a portion of the pin 0, is sprung into the groove. This springring presses against the foot of the roller-pin and securely locks it in place, the ring itself being held in the groove by its beveled contact with the outer periphery of the groove. Moreover, the roller table is driven down upon a shoulder ori the stafi, which shoulder overlaps the spring-ring and preventsit from getting loose by any possibility.

Having thus described my improvement, and without restricting myself to the precise form and structure of the spring and pocket as herein shown and described, what I claim as my invention, and desireto secure by Letters Patent,'is-

1. In combination, a roller-table provided with a pocket in one of its faces and having a socket for the roller-pin intersected by said pocket, a jewel roller-pin, and a spring set in the pocket and abutting against the roller-pin.

2. In combination, a roll'er-table provided with an annular groove in one of its faces and having a socket for the roller-pin intersected by said groove, a jewel roller-pin, and a divided ring sprung into the groove and abutting against the ro e pin. In testimor; .reof I have afiixed my signature in press of two witnesses.

ELMER J. HAVERLY.

Witnesses:

JOHN R. MURRAY, CHARLES PETER. 

